EP1069665A3 - Power transmission line and method of control - Google Patents

Power transmission line and method of control Download PDF

Info

Publication number
EP1069665A3
EP1069665A3 EP00305999A EP00305999A EP1069665A3 EP 1069665 A3 EP1069665 A3 EP 1069665A3 EP 00305999 A EP00305999 A EP 00305999A EP 00305999 A EP00305999 A EP 00305999A EP 1069665 A3 EP1069665 A3 EP 1069665A3
Authority
EP
European Patent Office
Prior art keywords
impedance
line
spms
power
short circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00305999A
Other languages
German (de)
French (fr)
Other versions
EP1069665A2 (en
Inventor
Ian David Foley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Equipmake Ltd
Original Assignee
Equipmake Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Equipmake Ltd filed Critical Equipmake Ltd
Publication of EP1069665A2 publication Critical patent/EP1069665A2/en
Publication of EP1069665A3 publication Critical patent/EP1069665A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/005—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too low isolation resistance, too high load, short-circuit; earth fault
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection
    • H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured

Abstract

A power transmission line, apparatus for and method of control thereof are provided to enable loads connected between the live and neutral conductors to be reconnected to a power supply following the occurrence of a short circuit upon the line, without the need to first repair the short circuited section of the line. The power line comprises a plurality of locations (8), each comprising a Signalling Power Management System (SPMS) unit (10) and a location transformer (12). The SPMS unit (10) comprises an impedance (18), which impedance and the location transformer (12) form a potential divider across the power supply. By comparing the voltages across the impedance (18) and the location transformer (12), a controller (28) determines whether there is a short circuit on the section of the power line downstream from the location transformer (12) as far as the next SPMS unit. Only if there is no short circuit upon this section does the controller (28) close a relay (26) in parallel with the impedance (18) such that all of the power supply voltage is dropped across the location transformer (12).
EP00305999A 1999-07-14 2000-07-14 Power transmission line and method of control Withdrawn EP1069665A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9916383.4A GB9916383D0 (en) 1999-07-14 1999-07-14 Power line isolation system
GB9916383 1999-07-14

Publications (2)

Publication Number Publication Date
EP1069665A2 EP1069665A2 (en) 2001-01-17
EP1069665A3 true EP1069665A3 (en) 2002-11-20

Family

ID=10857149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00305999A Withdrawn EP1069665A3 (en) 1999-07-14 2000-07-14 Power transmission line and method of control

Country Status (2)

Country Link
EP (1) EP1069665A3 (en)
GB (2) GB9916383D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103738201B (en) * 2013-12-27 2016-02-17 中国神华能源股份有限公司 A kind of equipment of locomotive automatic passing over of neutral section and method
CN109774478B (en) * 2019-01-27 2022-03-01 中国铁路上海局集团有限公司上海动车段 Power supply method for CRH380BL motor train unit under overhaul mode
CN111463783B (en) * 2020-04-29 2021-06-29 山东卓远智能科技有限公司 Low-voltage distribution network topology identification and fault positioning device and application method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203141A (en) * 1978-03-30 1980-05-13 Wescom, Inc. Low power dissipation series regulator for PCM repeater lines
WO1980002748A1 (en) * 1979-05-31 1980-12-11 Aktuell As Method and apparatus for measuring and displaying the distance to an occured short circuit or similar line fault on an alternating current powerline
DE4213271C1 (en) * 1992-04-16 1993-10-21 Aeg Westinghouse Transport Short-circuit testing of overhead line section for electric railway - increasing test voltage and monitoring current to provide short-circuit indication via threshold stage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232232A (en) * 1979-01-22 1980-11-04 Gould Inc. Voltage sensing and load measuring automatic reclosing system for D-C circuit breakers
DE3439875A1 (en) * 1984-10-31 1986-04-30 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for the remote supply of electrical loads by means of an AC voltage parallel supply
US5237480A (en) * 1990-02-26 1993-08-17 Seiscor Technologies, Inc. Apparatus for fault detection and isolation
FI109945B (en) * 1998-12-17 2002-10-31 Abb Oy Procedure for protection relay and protection relay

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203141A (en) * 1978-03-30 1980-05-13 Wescom, Inc. Low power dissipation series regulator for PCM repeater lines
WO1980002748A1 (en) * 1979-05-31 1980-12-11 Aktuell As Method and apparatus for measuring and displaying the distance to an occured short circuit or similar line fault on an alternating current powerline
DE4213271C1 (en) * 1992-04-16 1993-10-21 Aeg Westinghouse Transport Short-circuit testing of overhead line section for electric railway - increasing test voltage and monitoring current to provide short-circuit indication via threshold stage

Also Published As

Publication number Publication date
GB2355606B (en) 2003-08-06
GB0017420D0 (en) 2000-08-30
EP1069665A2 (en) 2001-01-17
GB2355606A (en) 2001-04-25
GB9916383D0 (en) 1999-09-15

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